The former factory worker and stay-at-home mother of three told reporters that she had been overwhelmed at the thought of winning just 1/1000th of that: she originally believed she won just $40,000.

She told her story, complete with enthusiastic hand gestures, at the press conference at the Ontario Lottery and Gaming Commission:

"When I went to the machine I just see 40 because I'd never won this amount of money. I told [the clerk] can you check this for me please? He checks it. He doesn’t even know himself and he’s the store owner. I said 'Never mind, I’ll go home,'" she said of first checking the ticket at a convenience store on Toronto's Eglinton Avenue.

"I went home and I told my daughter, 'Oh, I won $40,000.' She's jumping off the bed too and then she calls her [sister] and says, 'Mommy won $40,000.'"

She continued: "She flew up the stairs. I run up the stairs, then I run down the stairs. She went on the computer and she checked the computer and she goes, 'Mommy, You're $40-million richer.' I’m like, 'No way, no way.' I run down the street [to the store] like a crazy woman and check the lottery ticket and it says $40-million and I go, 'Oh, my God.'"

When Carreiro called her husband Mario to tell him the good news, he didn't believe her. Only after he saw the ticket himself did he join in the celebration — and quit his two jobs.

Carreiro plans to share her millions with her three children and five grandchildren — she plans to buy a house for herself and for her daughter — and vows to take a belated honeymoon with her husband.

"I'm going to Hawaii! My lifelong dream!" she announced, jumping up and down.

"Every person has told us that it hasn’t gone to a better, deserving family," Carreiro's daughter Manuela said before breaking down in tears. "My dad works so hard and we’ve been struggling so much. Forty million is so much money. It’s a blessing."

"I said to myself, one day I’m going to win. And here I am," Carreiro said at the press conference. "I'm doing this for my babies, for my granddaughters and grandson and my daughters. And for (Mario) especially…so he can quit."